Glass-tank.



W. G. BERGMAN.

GLAss 'TANK.

APPLICATION FILED JUNE 4. 1914.

1,237,283. y f Patentedfxug. 21,1917.

M0( @WWW www@ A TTORNEKS TED srA l. a. PANT OFFICE.

WILLIAM G. BEBGMAN, or TOLEDO, OHIO, AssIGNOR To THE TOLEDO @Lass COMPANY,

OF TOLEDO, OHIO, A CORPORATION OF oI-IIO.

GLASS-TANK.

in which a lining of chilled glass is maintained for ing.

In the drawings Figure l is a cross section through the tank;

Fig. 2 is an enlarged view, showing the manner of supporting the furnace cap and protecting the walls from fluxsealing means; and

Figs. 3 and 4 show modified constructions of Fig. 2.

In the present state of the art, glass. melting furnaces. have been constructed in which the side walls of the tank are protected from the luXing action by exposing a marginal portion of the glass to air cooling. This has the effect of producing a lining of chilled glass which protects the walls from the corrosive action of the flux.v Withfurnaces of this type, however, considerable diiculty has been experienced in mechanic al construction. Thus it is necessary to expose the marginal portion of the glass to the air in order that it may be chilled, while.

at the same time it is necessary to support the cap or portion of the vfurnace for closingthe combustion chamber. One construction which has been tried is the suspension of the cap or furnace chamber from a superframe, but without lsatisfactory result.' With the present invention the dliculty 1s overcome by the employment of an arch cap, and the supporting of the walls forming the base of the arch by laterally-projecting abutments, which may be anchored to the buckstays fo'r holding the side wallsof the tank.

- In detail, A is .the glass-holding tank which may `be of usual construction, and B are the buckstays for holding the side walls of the tank. C` is an arch-shaped cap arranged above the tank and so limited in dimensions as to leave an exposed glass' Specification of Letters Patent.l Patented-'Aug .21, 1917-, Application med June 4, 1914. serial Ne. 842,966.

margin D. For supporting this 'cap the blocks E which formfthe side walls are en'- gaged with a supporting beam, such as the channel beam F, while the latter is supported by bracket abutments G projecting laterally from the b uckstaysB.` The blocks E are suitably beveled to form the base of an arch constituting the main portion of the cap, and by reason of thefact that the brackets G are rigid this arch is held intact.

vTo retain the gases within the combustion chamber, the cap must be sealed by its side walls extending beneath the surface of the glass. These dependingv portions are thus the only portions O-f the furnace that will be exposed to the fluxin action, for the side walls of the tank will e protected by the chilled glass due tothe margin exposed to 7 air. 4The sealing portions will, however, waste away in time, and I have therefore provided means for easily removing and replacing the same. This may be accomplished` by forming the sealing blocks H so as to form a break-joint I with the blocks E, and in supporting said blocks H by hangers from the beam F. As shown 4in Fig. 2, hangers J are formed by rods which at their lower ends are connected with laterally-projecting lever arms K, and at their upper ends are adjustably secured by nuts L engaging threaded portions of the rods. The block H is held at the proper angle by attaching a second rod Mto the lever arm K, and which may be verticall ad'- justed by a nut N engaging a threade portion and bearing against a strap P on the beam F. Thus -by adjusting the rods J l and M the position and `angle of the block 'H may be changed.

With the construction shown in Fig. 3,

the block H is supported by a yoke-shaped frame Q, with an. adjustable clamping screw R at its upper end. With the construction shown in Flg. 4, the block is supported by a 'counterweighted lever S fulcrumed upon the walls of the tank A. With each of these. constructions whenever the block H becomes worn away by the flux, it may be quickly removed and another block substituted without the necessity of cooling off the fur'- nace.. l I

The gases forcombu'stion may be introduced into the furnace chamber within the cap by any suitable means, such as the.

i with a glass-holding tank, of a combustion cap therefor comprising an arch portion, blocks forming the arch abutments, laterally-extending supports for said abutment blocks, and sealing blocks detachably contudinally-extending nected to said .abutment blocks and depending therefrom below the level of the glass.

3. In a glass furnace, the combination with a glass-holding tank, of a combustion cap therefor, comprising an arch portion, abutment blocks at the opposite sides thereof and arranged inside of the plane of the tank wall to expose a margin of the glass, longieams for supporting said abutments, -buckstays secured to the sides of said tank, laterally-projecting bracket arms upon said buckstays for supporting said beams, and sealing blocks detachably secured to said .abutment 'blocks and depending therefrom below the level of the lass.

g 4L. In a glass furnace, the combination with a tank, of a combustion cap having an arch portion, an abutment for said arch arranged in a plane inside of the wall of the tank to expose a margin of the glass, a beam extending longitudinally of said abutment, a

of the tank to expose la margin 'of the glass,A

laterally-extending supporting arms for said abutment, and a sealing block detachably suspended from said abutment and depend- -ing beneath the level of the glass.

6. In a glass furnace, the combination with a combustion cap having an arch portion and .a suspended abutment, of a beam for supporting said abutment, a sealing block beneath said abutment depending therefrom into the glass, a lever arm for supporting said sealing block, .and adjustable compression and tension rods engaging said lever arm and attaching the same to said beam.

7. In a glass furnace, the combination with a tank, of a combustion cap therefor Ahaving an arch portion 'and an abutment,

the latter being arranged within the plane of the side wall of the tank, a laterally-projeeting supporting arm for said abutment, a sealing block having a stepped or breakjoint engagment with said abutment depending therefrom to extend beneath the level of the glass, and means for detachably suspending said sealing block from said abutment.

In testimony whereof I .aflix my signature in presence of two witnesses.

- WILLIAM G. BERGMAN,

Witnesses:

S. E. EICHMAN, T. II. MILLER. 

